---
title: "Monitor Remix sites"
canonical: "https://lemwatch.com/monitor/remix"
framework: "Remix"
last_verified: "2026-08-11"
source: "https://lemwatch.com"
---

# Monitor Remix sites

Loader/action error tracking and uptime monitoring for Remix apps.

## Common failure modes

- Loader 500s cascading into root ErrorBoundary
- Session cookie domain mismatch after custom-domain switch
- Form action POSTs blocked by stale CSRF tokens

## Typical hosts

- Vercel
- Fly.io
- Cloudflare Workers
- Netlify

## How we fingerprint this stack

__remixManifest payload and /build/ asset paths

_Canonical HTML page: https://lemwatch.com/monitor/remix_